Ostracodes are small animals, most of which have a two valved shell.

介形蟲是小型動(dòng)物, 其中大部份都具有兩瓣的外殼.

辭典例句

A large, valved, brass wind instrument with a bass pitch.

大型帶活塞的低音銅管樂器.

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Q 20 : Can a valved respirator be used for protection from the virus that causes H 1 N 1 influenza?

問20:可以用帶呼氣閥的呼吸防護(hù)口罩防甲型(H1N1)流感病毒 么 ?

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